Answer: A) excitement
Step-by-step explanation:
Sexual response cycle is the model that displays the responses gained from the sexual stimulation that takes place in the sexual activity. This feedback is the physiological response occur from the body of a person during their particular experience
Excitement is the first phase of this cycle which describes about the arousal experience by the person in the sexual experience. Men and women both can go through this stage by activeness in tension muscles .
Other options are incorrect because orgasm is the third level, plateau is the second stage and resolution is the last stage.Thus, the correct option is option(A).